Melffy Tag is a Quick-Play Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Melffy Tag is Unlimited.
YGOPRODeck lists Melffy Tag for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Melffy Tag belongs to the Melffy archetype—use that tag when searching for engine pieces and tech options.
A listed print of Melffy Tag appears in 2021 Tin of Ancient Battles (MP21-EN139) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Melffy Tag is about $0.03 on Cardmarket (prices change frequently).
